package com.wenzhoujie.utils;

public class XZip
{

	public XZip()
	{

	}

	/**
	 * 取得压缩包中的 文件列表(文件夹,文件自选)
	 * 
	 * @param zipFileString
	 *            压缩包名字
	 * @param bContainFolder
	 *            是否包括 文件夹
	 * @param bContainFile
	 *            是否包括 文件
	 * @return
	 * @throws Exception
	 */
	public static java.util.List<java.io.File> GetFileList(String zipFileString, boolean bContainFolder, boolean bContainFile) throws Exception
	{

		android.util.Log.v("XZip", "GetFileList(String)");

		java.util.List<java.io.File> fileList = new java.util.ArrayList<java.io.File>();
		java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));
		java.util.zip.ZipEntry zipEntry;
		String szName = "";

		while ((zipEntry = inZip.getNextEntry()) != null)
		{
			szName = zipEntry.getName();

			if (zipEntry.isDirectory())
			{

				// get the folder name of the widget
				szName = szName.substring(0, szName.length() - 1);
				java.io.File folder = new java.io.File(szName);
				if (bContainFolder)
				{
					fileList.add(folder);
				}

			} else
			{
				java.io.File file = new java.io.File(szName);
				if (bContainFile)
				{
					fileList.add(file);
				}
			}
		}// end of while

		inZip.close();

		return fileList;
	}

	/**
	 * 返回压缩包中的文件InputStream
	 * 
	 * @param zipFileString
	 *            压缩文件的名字
	 * @param fileString
	 *            解压文件的名字
	 * @return InputStream
	 * @throws Exception
	 */
	public static java.io.InputStream UpZip(String zipFileString, String fileString) throws Exception
	{
		android.util.Log.v("XZip", "UpZip(String, String)");
		java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(zipFileString);
		java.util.zip.ZipEntry zipEntry = zipFile.getEntry(fileString);

		return zipFile.getInputStream(zipEntry);

	}

	/**
	 * 解压一个压缩文档 到指定位置
	 * 
	 * @param zipFileString
	 *            压缩包的名字
	 * @param outPathString
	 *            指定的路径
	 * @throws Exception
	 */
	public static void UnZipFolder(String zipFileString, String outPathString) throws Exception
	{
		android.util.Log.v("XZip", "UnZipFolder(String, String)");
		java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));
		java.util.zip.ZipEntry zipEntry;
		String szName = "";

		while ((zipEntry = inZip.getNextEntry()) != null)
		{
			szName = zipEntry.getName();

			if (zipEntry.isDirectory())
			{

				// get the folder name of the widget
				szName = szName.substring(0, szName.length() - 1);
				java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName);
				folder.mkdirs();

			} else
			{

				java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName);
				file.createNewFile();
				// get the output stream of the file
				java.io.FileOutputStream out = new java.io.FileOutputStream(file);
				int len;
				byte[] buffer = new byte[1024];
				// read (len) bytes into buffer
				while ((len = inZip.read(buffer)) != -1)
				{
					// write (len) byte from buffer at the position 0
					out.write(buffer, 0, len);
					out.flush();
				}
				out.close();
			}
		}// end of while

		inZip.close();

	}// end of func

	/**
	 * 压缩文件,文件夹
	 * 
	 * @param srcFileString
	 *            要压缩的文件/文件夹名字
	 * @param zipFileString
	 *            指定压缩的目的和名字
	 * @throws Exception
	 */
	public static void ZipFolder(String srcFileString, String zipFileString) throws Exception
	{
		android.util.Log.v("XZip", "ZipFolder(String, String)");

		// 创建Zip包
		java.util.zip.ZipOutputStream outZip = new java.util.zip.ZipOutputStream(new java.io.FileOutputStream(zipFileString));

		// 打开要输出的文件
		java.io.File file = new java.io.File(srcFileString);

		// 压缩
		ZipFiles(file.getParent() + java.io.File.separator, file.getName(), outZip);

		// 完成,关闭
		outZip.finish();
		outZip.close();

	}// end of func

	/**
	 * 压缩文件
	 * 
	 * @param folderString
	 * @param fileString
	 * @param zipOutputSteam
	 * @throws Exception
	 */
	private static void ZipFiles(String folderString, String fileString, java.util.zip.ZipOutputStream zipOutputSteam) throws Exception
	{
		android.util.Log.v("XZip", "ZipFiles(String, String, ZipOutputStream)");

		if (zipOutputSteam == null)
			return;

		java.io.File file = new java.io.File(folderString + fileString);

		// 判断是不是文件
		if (file.isFile())
		{

			java.util.zip.ZipEntry zipEntry = new java.util.zip.ZipEntry(fileString);
			java.io.FileInputStream inputStream = new java.io.FileInputStream(file);
			zipOutputSteam.putNextEntry(zipEntry);

			int len;
			byte[] buffer = new byte[4096];

			while ((len = inputStream.read(buffer)) != -1)
			{
				zipOutputSteam.write(buffer, 0, len);
			}

			zipOutputSteam.closeEntry();
		} else
		{

			// 文件夹的方式,获取文件夹下的子文件
			String fileList[] = file.list();

			// 如果没有子文件, 则添加进去即可
			if (fileList.length <= 0)
			{
				java.util.zip.ZipEntry zipEntry = new java.util.zip.ZipEntry(fileString + java.io.File.separator);
				zipOutputSteam.putNextEntry(zipEntry);
				zipOutputSteam.closeEntry();
			}

			// 如果有子文件, 遍历子文件
			for (int i = 0; i < fileList.length; i++)
			{
				ZipFiles(folderString, fileString + java.io.File.separator + fileList[i], zipOutputSteam);
			}// end of for

		}// end of if

	}// end of func

	public void finalize() throws Throwable
	{

	}
}
